1U SuperChassis 505 Supermicro's mini-sized SC505 1U chassis features a depth of only 9. 8" with fan-less thermal design for client nodes, firewall applications, mail servers, web servers & other server applications. It supports a wide range of single processor based Micro ATX 9.6" x 9.6" motherboards as well as front side I/O access. In addition the SC503 is a perfect solution for home/office servers, with system noise level running at low 30 dB under the normal operation.